Topic: Vapor lock???
1971 van with stock style fuel pump and PICT 34 carb.
Finishing an engine rebuild but can't keep it running. Doesn't idle and seems like it runs out of gas. "Bubbles" appear in the in-line fuel filter so I suspect a vapor lock. The fuel filter has very little fuel in it once it is running.
The fuel pump is new, the lines are new, the gas tank was cleaned out, no gas leaks, the gas seems clean.
The fuel line is running from the fuel pump, through the fan housing, through the firewall to the tank.
I suspect that the line should NOT run through the fan housing and instead just wind its way up pass the coil and then down through the firewall to the tank. Is this correct route? Does it sound like a vapor lock problem?
Thanks so much.